ASTROSAT CZTI

Data Quality Report

Orbit 18397

Creation date: 2024-06-27T17:49:18.543090
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_094T01_9000002726_18397cztM0_level2.evt modeM0/AS1A05_094T01_9000002726_18397cztM0_level2_quad_clean.evt
Size (bytes)451,961,28093,565,440
Size431.0 MB 89.2 MB
Events in quadrant A3,207,471614,863
Events in quadrant B3,193,041636,125
Events in quadrant C3,086,730595,628
Events in quadrant D3,780,483555,340

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131842
B0132152
C0129422
D0153612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6181320.517716%
B6181310.501537%
C6181490.792752%
D61811873.025400%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7572 6182 16 16 0.21% 0.26%
B 7572 6182 10 10 0.13% 0.16%
C 7572 6182 0 0 0.00% 0.00%
D 7572 6182 171 171 2.26% 2.77%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 34 112968 730.67 777 763 153.6
A 4 2 104203 673.6 777 763 153.6
A 0 226 6675 38.5 777 763 153.6
B 3 64 47846 324.76 786 768 145.0
B 12 18 19002 125.78 786 768 145.0
B 10 245 18579 122.87 786 768 145.0
C 14 238 118029 667.81 752 759 175.6
C 0 207 29222 162.09 752 759 175.6
C 13 61 5321 25.98 752 759 175.6
D 7 238 485018 2713.8 736 715 178.5
D 1 52 363731 2034.17 736 715 178.5
D 14 34 47335 261.24 736 715 178.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter